1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Home Radios
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Threaded Mode
PT-41 short on the AM cycle
Chris Drumma
Member
***
Posts: 103
Threads: 48
Joined: Nov 2005
City: Freehold, NY
#1

01-15-2009, 08:07 AM
Recently bought one of these. Why did philco cut the AM band off at around 1600kc? Was there a good reason to do this?

Thanks
Chris
Find
Chuck Schwark
Phorum Expert
*****
Posts: 1,703
Threads: 55
Joined: Sep 2005
City: Evanston, IL
#2

01-15-2009, 10:27 AM
Originally the AM band only went to 1600 kHz. The expanded AM band we have had for a while now is a new allocation, once the old ham band was moved off that area to open for more commercial ventures. I'm sure some one else can give more specific dates.

Chuck
Chuck Schwark,
The Philco Repair Bench
[Image: http://www.philcorepairbench.com/images/philog3tiny.gif]
http://www.philcorepairbench.com
Website Find
BDM
Senior Member
****
Posts: 393
Threads: 40
Joined: Sep 2007
City: St Clair Shores, MI, USA
#3

01-16-2009, 07:03 PM
I don't believe the 160m HAM band has ever been lower than 1800/kc. From 1650 up to 1790/kc was the old police band and also used for LORAN around 1750/kc.
-Brian
If you collect or are interested in antique telephones, please visit Classic Rotary Phones
http://www.classicrotaryphones.com/forum/index.php
Find
« Next Oldest | Next Newest »




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
HiFi (Chifi) tube amp build - but my own design.
What may be lacking in the PP Tube amps may be the 2nd harmonics, which some, especially RCA back in the day called &quo...MrFixr55 — 05:32 PM
Jackson 715 not working
Usually in an emission tester, the tube under test is measured as if it were a diode. So, some testers connect all the g...RodB — 04:17 PM
Restoring Philco 37-604C
Yep. F5 is green, D5 is Red. Red is Bad. Green is Clean.morzh — 01:30 PM
Jackson 715 not working
I did start to do that but I stalled out because I could not figure out how the grid and plate get voltage. In this diag...daveone23 — 11:52 AM
Restoring Philco 37-604C
(Insert Homer Simpson "DOPF" Here.) When all fails, look at the can. Took the Ron Ramirez advice, red Caig D...MrFixr55 — 09:23 AM
Philco 91 Speaker Replacement
From your text I am not sure if you intend to use the existing speaker with a resistor instead of the field coil. It wo...morzh — 08:44 AM
Philco 91 Speaker Replacement
My field coil is bad. I am still hoping to find an original, but if I can't I will go with a fitting Philco speaker, 125...dconant — 08:34 AM
Philco 91 Speaker Replacement
As Rod said, it is OK to use a fitting speaker, and then look for an original one. If you buy a Hammond 125 output tr...morzh — 08:15 AM
Philco 91 Speaker Replacement
Yes, I often have to substitute, then keep an eye out for an original. In the meantime, the radio is working and being e...RodB — 08:02 AM
Philco 91 Speaker Replacement
I was wondering if I could use a more common Philco speaker and just add the resistance I need for the coil and get a ne...dconant — 07:45 AM

[-]
Who's Online
There are currently 2381 online users. [Complete List]
» 2 Member(s) | 2379 Guest(s)
AvatarAvatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Home Radios